Honda Car Forum


 

Go Back   Honda Car Forum - Accord Parts Civic Tuning Acura Racing > Discussion > Honda Technical

Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old 16 Jan 2008, 04:16 pm
Junior Member
 
Join Date: Jan 2008
Posts: 1
Default Problem with a 2000 Honda Accord and intermitent misfires?

The car has run fine since it was purchased new... now it has a problem where maybe one a week it will do the following. It will start perfectly when you first drive it... you will stop at a store, and then when you return to the car it will misfire to the point that it will no longer idle... you can only keep it idling by holding your foot on the gas.. the ODBII codes are for misfire on 3 out of hte 6 cylinders and a for multiple misfires... I took it to the dealer, and he said nothing was wrong... he then said he test drove it and got a reading on the EGR valve.. He replaced it and now it continues to do the same thing... clearly I have no faith in the dealer and am wondering if anyone else has had similar issues. It only does it after you've driven the car but not every time just randomly... more often than not it functions perfectly.Nothing has been modified on the car it has been left completely stock. I did wonder about the sensors or something related to the variable valve timing, but I assumed if the sensor or something major was failing that the problem would occur much more frequently (was actually hoping it would happen all the time so the mechanics could experience it first hand instead of having them just randomly change parts and make money while the problem persists).Actually the vapor lock does seem to make sense... I think it has happened on warmer days...
Reply With Quote
  #2 (permalink)  
Old 16 Jan 2008, 04:31 pm
Junior Member
 
Join Date: Sep 2007
Posts: 25
Default

try cam sensors
Reply With Quote
  #3 (permalink)  
Old 16 Jan 2008, 04:46 pm
Junior Member
 
Join Date: Jan 2008
Posts: 1
Default

i would say cam sensor or exhaust you change the exhaust or take any parts out of the stock?
Reply With Quote
  #4 (permalink)  
Old 16 Jan 2008, 05:01 pm
Senior Member
 
Join Date: Aug 2007
Posts: 1,338
Default

What you are describing is a classic description of vapor lock in the fuel lines. Winter blend fuel has a higher alcohol content to help the fuel evaporate in cold weather. the problem is that when you have a winter blend gas with a higher alcohol content and drive the car then shut it off the alcohol in the fuel lines vaporizes from the heat of the engine. The 15 minutes seems to be a critical time. Up until about 5-10 minutes (depending on outside temperature) the fuel lines don't absorb enough heat from the engine to vaporize the fuel. After about 20 minutes the engine and the fuel lines cool back down and the fuel vapors condense to liquid again.the condition also happens more frequently when you have a warm day than when you have a cold day.Running the engine after it starts and is sputtering clears the vaporized fuel out of the fuel rail and brings fresh fuel up from the fuel tank. As soon as that happens, the condition clears up.The recommendation is to change the brand of gas that you're running in the car. Every brand and in fact every truckload has different quantities of alcohol and alcohol derivatives. The best brands don't necessaryily mean the least amount of alcohols. So try another brand and see if the condition goes away. Also, be sure you're running the recommened octane fuel in the car. Higher octane fuels are more volitile and more likely to cause this condition, so if your owner's manual calls for 87 octane and your running 89 or 91, drop back to 87 and see if that eliminates the condition.this condition should fix itself in about 10 weeks when the manufacturers start mixing the fuel to the summer blendhope that helps
Reply With Quote
  #5 (permalink)  
Old 16 Jan 2008, 05:16 pm
Junior Member
 
Join Date: Nov 2007
Posts: 5
Default

Sounds like an engine coolant temp sensor problem.This sensor is the modern day choke system.So when the engine is cold it will start straight away and warm up ok as long as you don't turn it off after a quick drive to the store and then when you come to restart it's neither here nor there and gets confused and floods the engine.
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
1997 Honda 4 door intermitent chirp when shifting into 2nd sometimes3rd Douglas Honda 2 2 31 Dec 2007 07:39 am
98 accord 4-cyl coupe misfires while accelerating, changed the plugs and wires, what else Lance N Honda Technical 5 06 Oct 2007 05:54 pm
2000 Honda Accord V6 Ignition problem Mark Savoy Honda 2 8 16 Jul 2006 08:08 pm
Startin Intermitent on 90 Legend DownTurn Acura 18 09 Dec 2004 06:13 pm
Intermitent Battery Light '90 Integra steve Acura 4 17 Apr 2004 02:29 pm


All times are GMT -5. The time now is 01:13 pm.


Attribution:
Honda News | Autoblog
Powered by Yahoo Answers




Powered by vBulletin®
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
LinkBacks Enabled by vBSEO 3.6.0 PL2 © 2011, Crawlability, Inc.
HondaCarForum.com is not affiliated with Honda Motor Company in any way. Honda Motor Company does not sponsor, support, or endorse HondaCarForum.com in any way. Copyright/trademark/sales mark infringements are not intended or implied.